Cactus bionic structure anti-collision vehicle door and optimal design method thereof

Abstract

The invention discloses a cactus bionic structure anti-collision vehicle door and an optimal design method thereof. The anti-collision vehicle door comprises a vehicle door inner plate, a vehicle doorouter plate, a filling inner core, a vehicle door anti-collision beam and a vehicle window frame; the filling inner core is manufactured through bionic design on the basis of the cactus appearance structure, and the vehicle can absorb collision energy as much as possible when being subjected to side collision through pure fold deformation when the bionic cactus structure is subjected to externalimpact; and the filling inner core is fixed in a gap between the vehicle door outer plate and the vehicle door inner plate, and the vehicle door anti-collision beam and the vehicle door inner plate are fixed. During optimization, vehicle door vertical stiffness, first-order frequency, vehicle door quality and side collision safety are selected as a vehicle door structure optimization target, the thickness of the vehicle door outer plate, the thickness of the vehicle door inner plate, the thickness of the filling inner core, the thickness of the vehicle door anti-collision beam and the thickness of a reinforcing plate of the vehicle door inner plate are subjected to optimal design, and the anti-collision property of the vehicle door is improved, so that the safety of passengers in the vehicle is protected.

Description

technical field [0001] The invention relates to the field of automobile passive safety protection, in particular to a cactus bionic structure anti-collision door and an optimization design method thereof. Background technique [0002] As an important part of the car body, the door must meet the crash performance requirements while being lightweight, and at the same time, it should not be stimulated by the engine and the road to produce obvious vibrations that will affect the NVH performance of the vehicle. When the car is in a side collision, the door intrusion is relatively large, which cannot provide enough passenger space and absorb energy as much as possible. To solve the existing problems, the current common method is to optimize the design of the door or fill some energy-absorbing materials such as foam and honeycomb aluminum. Although the energy-absorbing characteristics of the door can be improved to a certain extent, considering the coordination of various working c...

AI Technical Summary

Problems solved by technology

When the car is in a side collision, the door intrusion is relatively large, which cannot provide enough passenger space and absorb energy as much as possible

In view of the existing problems, the current common method is to optimize the design of the door or fill some energy-absorbing materials such as foam and honeycomb aluminum. Although the energy-absorbing characteristics of the door can be improved to a certain extent, considering the coordination of various working conditions Optimality, these traditional methods cannot greatly improve the overall performance of the door

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